but if he is to run the cia for president obama, john brennan is first going to have to face questions on thursday about some of what michael isikoff turned up here on this program last night. a justice department white paper elaborating the administration's reasoning for why it thinks it is legal to kill american citizens on the president's say so. or actually, on the say so of an informed high level official of the u.s. government. so maybe that's the president, but maybe that's somebody else. michael isikoff's scoop ended up at "the new york times" today and "the washington post" and "the hill" and slate and salon and ap to name a few. it was everywhere. and then at a press conference today, the attorney general was asked about it. >> last night nbc reported a white paper that was prepared by the justice department undated, unsigned about the legal -- the legal pinnacles for targeting americans overseas. could you please give us what the precise definition is and how that would be carried out? >> well, there have been a series of speeches that i gave, jay johnson gave, john brennan